how to initialize std::vector?

[Tony Young]

Hi,

I wonder if there is a way to declare and initialize a vector in one
line as one does for array (shown below):

int n[4] = {1, 2, 3, 4};

The one line should be equivalent to the following code:
vector<int> n;
n.resize(4);
for (int i=0; i<4; i++)
n = i+1;

Any help is appreciated.

JD

 

[Victor Bazarov]

I wonder if there is a way to declare and initialize a vector in one
line as one does for array (shown below):

int n[4] = {1, 2, 3, 4};

The one line should be equivalent to the following code:
vector<int> n;
n.resize(4);
for (int i=0; i<4; i++)
n = i+1;

I think I heard/read about 'counting_iterator' from Boost. Check
it out.

V

 

[WittyGuy]

I wonder if there is a way to declare and initialize a vector in one
line as one does for array (shown below):

int n[4] = {1, 2, 3, 4};

The one line should be equivalent to the following code:
vector<int> n;
n.resize(4);
for (int i=0; i<4; i++)
n = i+1;

I don't know the one line equivalent, but the following might be
helpful to you:
int n[4] = {1, 2, 3, 4};
vector <int> vecN (n, n+4);

-
Sukumar R